www.777含羞草I1819xxxxx高清tvI网站看片I中文字幕第9页I久久福利电影I试看120秒做受视频一区二区I91九色视频国产I91看片在线播放I99iavI国色天香在线I天天插天天爱I亚洲第一论坛啪啪Ichinese壮男深夜树林xxI可以直接看无码avI丁香婷婷久久I麻豆传媒视频在线I成人免费小说网站I黄色av免费在线

On March 6, ENFI completed the last test on the control system for unmanned electric locomotive transportation popularization and application project in Dongguashan Copper Mine of Tongling Nonferrous Metals Group Holding Co., Ltd., and made the control system ready for commercialization.

Unmanned electric locomotive transportation system, put forward by Yu Runcang, the academician of Chinese Academy of Engineering and the senior consultant and expert of ENFI, was developed jointly by ENFI and Dongguashan Copper Mine of Tongling Nonferrous Metals Group Holding Co., Ltd. In 2010, the technology stepped into development and implementation stage, and a commercial test was carried out in Dongguashan Copper Mine. After nearly three years of tense work and  overcoming  a number of technical problems, the system was put into trial operation in the level -875 m of Dongguashan Copper Mine in May 2012. It passed the acceptance organized by Tongling Nonferrous Metals Group Holding Co., Ltd., and was  put into commercial production in August the same year. The technology fills a blank of science and technology in China and even in Asia.

The unmanned electric locomotive transportation system for underground mine consists of intelligent unmanned variable-frequency electric locomotive, roadway mobile wireless communication system, automatic dispatching of electric locomotive, protection and monitoring system and electric locomotive transportation power supply control system . The electric locomotive traction train achieves remote ore loading, automatic operation and ore unloading. Its operating status is displayed in dispatching room in real time via wireless communication, and it can be controlled through remote real-time dispatching if necessary, thus is very convenient for operation. The technology can satisfy the need of simultaneous transportation of several locomotive trains. Take the actual production of Dongguashan Copper Mine for example, application of the technology contributes to the reduction of the number of workers from 40 to 8 in transportation system, significantly improving the transportation efficiency and reducing the cost of production.